Crenation is the:

Plasmolysis is the result of

When pieces of potato tissue were placed in a solution,after some time a loss in weight was recorded. The possible reason could be

Plant cells submerged in distilled water will become

If the external solution is less concentrated than the cytoplasm,it is called $P$. If the external solution is more concentrated than the cytoplasm,it is called $Q$. If the external solution balances the osmotic pressure of the cytoplasm,it is called $R$.

Who proved the plasmolysis of sieve tubes?